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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>External style sheet 外部样式表</title>
    <!-- external style sheet -->
    <link rel="stylesheet" href="css/externalstylesheet.css">
</head>

<body>
    <h1>
        Hotel booking form the comfort of your room.
    </h1>
    <p>
        Compare and book from more than 5000 hotels.
    </p>
</body>

</html>